Advertisements
Advertisements
Question
The zero of the polynomial 2x + 5 is
Options
`5/2`
`-5/2`
`2/5`
`-2/5`
Advertisements
Solution
`-5/2`
Explanation;
Hint:
2x + 5 = 0
⇒ 2x = −5
⇒ x = `-5/2`
APPEARS IN
RELATED QUESTIONS
Find p(0), p(1) and p(2) for the following polynomial:-
p(y) = y2 – y + 1
Verify whether the following zeroes of the polynomial, indicated against them.
`p(x) = 3x + 1, x = -1/3`
Verify whether the following zeroes of the polynomial, indicated against them.
p(x) = x2, x = 0
Verify whether the following zeroes of the polynomial, indicated against them.
p(x) = 2x + 1, `x = 1/2`
Find the zero of the polynomial in the following case:
p(x) = x – 5
Find the zero of the polynomial in the following case:
p(x) = 3x – 2
Find the zero of the polynomial in the following case:
p(x) = 3x
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`g(x)=3x^2-2,` `x=2/sqrt3 2/sqrt3`
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`f ( x ) = 5x - pi , x = 4/5`
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`f (x) = 2x +1, x = 1/2`
Find the zero of the polynomial of the following:
p(x) = 2x + 5
Find the zero of the polynomial of the following:
q(y) = 2y – 3
Find the zero of the polynomial of the following:
p(x) = ax when a ≠ 0
Find the zero of the polynomial in the following:
h(x) = ax + b, a ≠ 0, a, b ∈ R
Verify whether the following are zeros of the polynomial, indicated against them, or not
p(x) = ax + b, x = `(-"b")/"a"`
Verify whether the following are zeros of the polynomial, indicated against them, or not
p(x) = (x + 3) (x – 4), x = −3, x = 4
Find the number of zeros of the following polynomial represented by their graph
Find the number of zeros of the following polynomial represented by their graph
Zeros of (2 – 3x) is ___________
Zero of the zero polynomial is ______.
Zero of a polynomial is always 0
–3 is a zero of x – 3
`-1/3` is a zero of 3x + 1
`(-4)/5` is a zero of 4 – 5y
–3 is a zero of y2 + y – 6
Find the zeroes of the polynomial in the following:
p(x) = x – 4
If a, b, c are all non-zero and a + b + c = 0, prove that `a^2/(bc) + b^2/(ca) + c^2/(ab) = 3`.
